Crate hash loading from Cargo.lock is broken in Rust 1.77

[pacak]

rust-lang/cargo#12914 changed how package ID looks like, now it's something like this:

-"bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)"
+"https://github.com/rust-lang/crates.io-index#bitflags@1.0.4"

This changed how PackageId is represented:
https://docs.rs/cargo_metadata/latest/cargo_metadata/struct.PackageId.html

It is possible to inspect the repr field, if the need arises, but its precise format is an implementation detail and is subject to change.

At the same time lock.rs creates them from parts:

crate2nix/crate2nix/src/lock.rs

Line 42 in e494b56

repr: format!("{} {} ({})", name, version, source),

As a result mapping between "shortened" and "full" ids breaks, and it fails to find any hashes. It's not the end of the world - crate2nix can fetch crates on it's own and place them in a file, but this is very slow if you have a lot of them.